public class ntd {
    class Solution {
        public int findPoisonedDuration(int[] timeSeries, int duration) {
            int ret = 0;
            for(int i= 1;i<timeSeries.length;i++){
                int x = timeSeries[i]-timeSeries[i-1];
                if(x>=duration)
                {
                    ret+=duration;
                }
                else{
                    ret+=x;
                }
            }
            return ret+duration;
        }
    }
}
